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Duet Aura - Fix No Sounds

  • Updated
NO SOUND TROUBLESHOOTING

Duet Aura – No Sound From Headphones?

Follow these steps if your Duet Aura (HT6129R) is connected to your TV but you cannot hear sound.

Before You Start: Turn on the transmitter and headphones. Play a TV channel or video with sound while testing.

Step 1 – Check the TV Audio Connection

  1. Check the cable connecting your TV to the Duet Aura transmitter.
  2. Make sure the cable is firmly connected at both ends.
  3. Connect the cable to the matching INPUT port on the transmitter:
    • HDMI ARC – HDMI cable.
    • OPT – Optical cable.
    • AUX – 3.5 mm audio cable.

Step 2 – Check Your TV Audio Settings

Open the section that matches your cable:

Using HDMI ARC
  1. Connect the HDMI cable to the TV's HDMI ARC port.
  2. Open your TV's Sound Settings.
  3. Set the audio format to PCM / Stereo.
  4. Turn ARC OFF in your TV settings.

Can't find PCM? Follow the guide for your TV brand.

Find PCM Settings for Your TV →
Using an Optical Cable
  1. Connect the cable from your TV's Optical / Digital Audio OUT to the transmitter's OPTICAL INPUT, not OUTPUT.
  2. Select Optical / Digital Audio Out in TV settings, if required.
  3. Set the audio format to PCM / Stereo.

Can't find PCM? Follow the guide for your TV brand.

Find PCM Settings for Your TV →
Using an AUX / 3.5 mm Cable
  1. Connect the cable from the TV's Headphone / Audio OUT to the transmitter's AUX INPUT.
  2. Select Headphones / Audio Out in TV settings, if required.
  3. Increase the TV volume and make sure it is not muted.

Step 3 – Check the Transmitter Audio Signal

While your TV is playing, check the Audio Signal light on the transmitter.

Solid White – TV audio detected.
Flashing White – No valid TV audio.

If flashing white:

  1. Recheck your TV audio output and PCM / Stereo settings.
  2. Make sure the cable is firmly connected.
  3. For Optical, connect the cable to the transmitter's OPTICAL INPUT, not OUTPUT.
Step 4 – Check the Headphone Connection
  1. Turn on both Duet Aura headphones.
  2. Keep them near the transmitter.
  3. Wait for them to connect to the Auracast broadcast.

Solid Orange on Headphones – Connected to Auracast.

If a headphone is still searching, turn it off and back on near the transmitter.

Important: For TV listening, use the Duet Aura transmitter. You do not need to pair the headphones through your TV's Bluetooth menu.

Step 5 – Check the Volume
  1. Increase the volume on both headphones.
  2. Make sure the TV program is not muted.
  3. Test each headphone separately.
Only Certain Apps, Channels or Cable Box Have No Sound?

If regular TV audio works but a streaming app, channel or cable box has no sound:

  1. Open the TV or streaming device's Audio Settings.
  2. Set the audio format to PCM / Stereo.
  3. Play the program again.

Using a Cable Box?

Your cable box may have separate audio settings.

Cable Box Audio Settings Guide →
Still No Sound? Restart the Connection
  1. Turn off the transmitter and both headphones.
  2. Reconnect the TV audio cable firmly.
  3. Turn the transmitter back on.
  4. Turn on both headphones and test again.

Still No Sound?

Tell us your TV brand and model, which cable you are using, and what the transmitter and headphone lights show.

Contact Avantree Support →

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